JPS6141353Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a fastening device for a speaker unit and a cabinet, the purpose of which is to firmly fix the driving part near the magnetic circuit of the speaker unit to prevent reaction from the magnetic circuit. .

Conventionally, this type of speaker unit mounting part
As shown in the figure, a nut 2 is embedded in the buttful plate 1 of the cabinet frame, and the frame 4 of the speaker unit 3 is fastened with a bolt 5. 4～
It was tightened in about 8 places. However, in this tightening method, the contact area between the buffer plate 1 and the frame 4 of the speaker unit 3 is small, and the magnetic circuit section 6 of the speaker unit 3 is in a floating state, so that vibrations due to reaction from the magnetic circuit are transmitted through the frame 4. This causes the accurate driving force to not be transmitted to the diaphragm, causing the reproduced sound to become unclear.

This idea was made to improve the problems of the conventional example described above, and it not only firmly fixes the frame of the speaker unit and the buttful plate of the cabinet, but also fixes the vicinity of the speaker magnetic circuit and prevents the magnetic The present invention provides a fastening device for a speaker unit and a cabinet that is tightened so as to prevent reaction from a circuit, eliminate unnecessary vibration, and reduce radiation of distortion components from a baffle.

Hereinafter, an embodiment of this invention will be explained in detail based on FIGS. 2 and 3. In the figure, 10 is a speaker unit, 11 is a frame supporting the speaker unit, and 12 is a diaphragm of the speaker. Frame 1 for fixing the speaker unit 10 to the buttful 13 of the cabinet
The mounting surface 11a of the mounting surface 11 is tapered, and a slotted portion 14a is formed in the tapered tightening ring 14 that engages with the tapered mounting surface 11a. Tapered tightening ring 1 above
The slotted portion 14a of No. 4 is provided with a screw tightening portion 14b, and by tightening the slotted portion 14a of the tightening ring 14 with the tightening bolt 15,
The tapered frame 11 engaged with the tapered portion of the tightening ring 14 is pushed upward.

Further, below the tapered frame 11 of the speaker unit 10, there is a bracket 1 of the cabinet.
A stopper 11b is formed to engage with 3.
By tightening the slotted portion 14a of the tightening ring 14, the frame 11 is pushed upward and the stopper 11b is engaged with the bottom surface of the buttful 13.

That is, when the tapered mounting surface 11a of the frame 11 of the speaker unit 10 configured as described above is tightened with the tightening bolt 15 on the screw tightening portion 14b of the tightening ring 14, the tightening ring 14 is tightened in the direction of arrow D. Then, a force in the direction B acts to slide the tapered mounting surface 11a of the frame 11 that supports the speaker unit 10 and push the frame 11 upward in the direction C, so that the stopper 11
b engages with the baffle 13 and the speaker unit 1
Fix the vicinity of the magnetic circuit of 0.

In the above configuration, the tapered mounting surface 11a of the frame 11 and the taper of the tightening ring 14 are not limited to a linear shape, but may be formed in a curved shape.

As explained in detail above, the speaker unit and cabinet fastening device according to this invention has a simple structure and can be firmly fastened by force in two directions between the speaker frame and the buffer, and the magnetic circuit of the speaker unit By fixing the vicinity, reaction from the magnetic circuit is prevented,
Unnecessary vibrations can be eliminated, and the radiation of distortion components from the buttful can be reduced.

Furthermore, the speaker unit has extremely significant practical effects, such as the entire frame flange portion being fixed by the tightening ring and being easy to attach and detach.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing a conventional embodiment, Fig. 2 is a top view of a fastening section showing an embodiment of this invention, and Fig. 3 is an enlarged sectional view showing the main parts of Fig. 2. be. 10...Speaker unit, 11...Frame, 11a...Mounting surface, 11b...Stopper, 1
2... Vibration plate, 13... Tightening ring, 14a... Slit portion, 14b... Screw tightening portion, 15... Tightening bolt.

Claims (1)

[Scope of utility model registration request] In a device for attaching a speaker unit to a buttle of a cabinet, the mounting surface of a frame supporting the speaker unit is formed into a tapered shape, and a stopper is formed below the frame to engage with the bottom surface of the buttle of the cabinet. A tapered tightening ring having a slotted portion and a screw tightening portion is engaged with the shaped mounting surface,
A fastening device for a speaker unit and a cabinet, characterized in that the vicinity of the magnetic circuit of the speaker unit can be tightly fixed by tightening the screw fastening portion of the fastening ring.